During a presentation yesterday in Washington D.C., Sun CEO Jonathan Schwartz said his company's open-source file system, ZFS, will be introduced into Mac OS X. ZFS, the 128-bit file system at the core of Sun's Solaris operating system, will be come the default file system for the Mac OS X, Schwartz said, during his presentation. Apple will discuss the adoption of ZFS at its Worldwide Developers Conference this month. The target Mac OS will be Leopard, version 1o.5, which is due later this year. Techmeme has more.